Preparation of TiO2/CNTs Composite Coated Separator and Its Application in Li-S Battery

被引：8

作者：

Guan Yibiao ^{[1
,2
]}

Li Wanlong ^{[3
]}

Xie Xiaoyi ^{[3
]}

Qu Wei ^{[3
]}

Shen Jinran ^{[2
]}

Fu Kai ^{[2
]}

Guo Cuijing ^{[2
]}

Zhou Shuqin ^{[2
]}

Fan Hongjia ^{[2
]}

Chu Yongjin ^{[2
]}

Chen Renjie ^{[3
,4
]}

机构：

[1] State Key Lab Operat & Control Renewable Energy &, Beijing 100192, Peoples R China

[2] China Elect Power Res Inst, Beijing 100192, Peoples R China

[3] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China

[4] Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2019年 / 40卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Li-S battery; Metal-organic framework; Chemical adsorption; LITHIUM-SULFUR BATTERIES; METAL ANODE; PERFORMANCE; CARBON; CATHODE;

D O I：

10.7503/cjcu20180514

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous TiO2 was prepared with metal-organic framework MIL-125(Ti) as template, and CNTs were introduced to form the three-dimensional conductive TiO2/CNTs composite. The TiO2/CNTs composite was coated on one side of the separator and applied in lithium-sulfur battery. The morphology and elemental composition of TiO2 were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy(XPS). The CNTs/S cathodes with TiO2/CNTs composite coated separator deliver a high initial discharge capacity of 1051. 1 mA.h/g and still retain a capacity of 904. 8 mA.h/g after 150 cycles at 0.5C. Even at 1C, the capacity is still up to 1036. 9 mA.h/g, and a high capacity of 763.0 mA.h/g is retained after 250 cycles, showing good rate performance.

引用

页码：536 / 541

页数：6

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